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BOSTON MARATHON 2025

Pierre-Henry Heerlein

Bib: 28893•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:30
Rank: #20057
Start → 5K
26:30 | 8:32/mi
10K· 6.21 mi
51:58
Rank: #19018 (+1039)
5K → 10K
25:28 | 8:12/mi
15K· 9.32 mi
1:18:33
Rank: #19205 (-187)
10K → 15K
26:35 | 8:33/mi
20K· 12.43 mi
1:45:38
Rank: #19264 (-59)
15K → 20K
27:05 | 8:43/mi
Half· 13.11 mi
1:51:27
Rank: #19262 (+2)
20K → Half
5:49 | 8:32/mi
25K· 15.53 mi
2:13:03
Rank: #19293 (-31)
Half → 25K
21:36 | 8:55/mi
30K· 18.64 mi
2:42:06
Rank: #19307 (-14)
25K → 30K
29:03 | 9:21/mi
20M
2:55:24
Rank: #19402 (-95)
30K → 20M
13:18 | 9:47/mi
21M
3:05:39
Rank: #19385 (+17)
20M → 21M
10:15 | 10:15/mi
35K· 21.75 mi
3:12:53
Rank: #19463 (-78)
21M → 35K
7:14 | 9:40/mi
23M
3:25:07
Rank: #19505 (-42)
35K → 23M
12:14 | 9:46/mi
24M
3:34:23
Rank: #19465 (+40)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:42:16
Rank: #19374 (+91)
24M → 40K
7:53 | 9:13/mi
25.2M
3:45:34
Rank: #19302 (+72)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:54:27
Rank: #19234 (+68)
25.2M → Finish
8:53 | 8:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:27
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time2:03:00
Pace9:23 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:1326:308:3226:30
8:32
-
10K
6.21 mi12:09:4151:588:2225:28
8:12
-0:20
15K
9.32 mi12:36:161:18:338:2626:35
8:33
+0:21
20K
12.43 mi13:03:211:45:388:3027:05
8:43
+0:10
Half
13.11 mi13:09:101:51:278:305:49
8:32
-0:11
25K
15.53 mi13:30:462:13:038:3421:36
8:55
+0:23
30K
18.64 mi13:59:492:42:068:4229:03
9:21
+0:26
20M
20.00 mi14:13:072:55:248:4613:18
9:47
+0:26
21M
21.00 mi14:23:223:05:398:5010:15
10:15
+0:28
35K
21.75 mi14:30:363:12:538:527:14
9:40
-0:35
23M
23.00 mi14:42:503:25:078:5512:14
9:46
+0:06
24M
24.00 mi14:52:063:34:238:569:16
9:16
-0:30
40K
24.85 mi14:59:593:42:168:577:53
9:13
-0:03
25.2M
25.20 mi15:03:173:45:348:573:18
9:34
+0:21
Finish
26.22 mi15:12:103:54:278:578:53
8:43
-0:51

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:12 /mi

Average Pace

8:57 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:56

61% of race

Time at Steady Pace

46:12

20% of race

Time at Slower Pace

46:19

20% of race

Average Pace: 8:56 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:44:1326:308:3226:30
8:32
#20057
10K
6.21 mi12:09:4151:588:2225:28
8:12
#19018
15K
9.32 mi12:36:161:18:338:2626:35
8:33
#19205
20K
12.43 mi13:03:211:45:388:3027:05
8:43
#19264
Half
13.11 mi13:09:101:51:278:305:49
8:32
#19262
25K
15.53 mi13:30:462:13:038:3421:36
8:55
#19293
30K
18.64 mi13:59:492:42:068:4229:03
9:21
#19307
20M
20.00 mi14:13:072:55:248:4613:18
9:47
#19402
21M
21.00 mi14:23:223:05:398:5010:15
10:15
#19385
35K
21.75 mi14:30:363:12:538:527:14
9:40
#19463
23M
23.00 mi14:42:503:25:078:5512:14
9:46
#19505
24M
24.00 mi14:52:063:34:238:569:16
9:16
#19465
40K
24.85 mi14:59:593:42:168:577:53
9:13
#19374
25.2M
25.20 mi15:03:173:45:348:573:18
9:34
#19302
Finish
26.22 mi15:12:103:54:278:578:53
8:43
#19234
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20057124691246919660(Top 69%)12353(Top 77%)12353(Top 219%)
10K6.21 mi3.10 mi19018+103912048+42112048+42117864(Top 63%)11598(Top 72%)11598(Top 206%)
15K9.32 mi3.11 mi19205-18712136-8812136-8819660(Top 69%)12353(Top 77%)12353(Top 219%)
20K12.43 mi3.11 mi19264-5912153-1712153-1719486(Top 69%)12237(Top 76%)12237(Top 217%)
Half13.11 mi0.68 mi19262+212145+812145+819329(Top 68%)12183(Top 76%)12183(Top 216%)
25K15.53 mi2.42 mi19293-3112155-1012155-1019464(Top 69%)12174(Top 76%)12174(Top 216%)
30K18.64 mi3.11 mi19307-1412119+3612119+3619340(Top 68%)11982(Top 74%)11982(Top 212%)
20M20.00 mi1.36 mi19402-9512141-2212141-2220242(Top 71%)12252(Top 76%)12252(Top 217%)
21M21.00 mi1.00 mi19385+1712105+3612105+3619184(Top 68%)11706(Top 73%)11706(Top 207%)
35K21.75 mi0.75 mi19463-7812127-2212127-2220884(Top 74%)12389(Top 77%)12389(Top 220%)
23M23.00 mi1.25 mi19505-4212104+2312104+2319682(Top 69%)11756(Top 73%)11756(Top 208%)
24M24.00 mi1.00 mi19465+4012071+3312071+3318650(Top 66%)11240(Top 70%)11240(Top 199%)
40K24.85 mi0.85 mi19374+9112012+5912012+5917435(Top 61%)10573(Top 66%)10573(Top 187%)
25.2M25.20 mi0.35 mi19302+7211969+4311969+4314946(Top 53%)9403(Top 58%)9403(Top 167%)
Finish26.22 mi1.02 mi19234+6811915+5411915+5417570(Top 62%)10673(Top 66%)10673(Top 189%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19660

Males

12353

M18-39

12353

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

17864

Males

11598

M18-39

11598

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19660

Males

12353

M18-39

12353

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

19486

Males

12237

M18-39

12237

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19329

Males

12183

M18-39

12183

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19464

Males

12174

M18-39

12174

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

19340

Males

11982

M18-39

11982

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20242

Males

12252

M18-39

12252

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

19184

Males

11706

M18-39

11706

21M→35K

21.0 - 21.8 mi

Top 74%
×7stories
+17ft-86ft

Overall

20884

Males

12389

M18-39

12389

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

19682

Males

11756

M18-39

11756

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18650

Males

11240

M18-39

11240

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

17435

Males

10573

M18-39

10573

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14946

Males

9403

M18-39

9403

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17570

Males

10673

M18-39

10673

Passing Analysis

Category:
Athletes Passed
2456
Passed By
1633
Net Change
+823
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20057
5K → 10K107536+1039#20057#19018
10K → 15K135322-187#19018#19205
15K → 20K173232-59#19205#19264
20K → Half3432+2#19264#19262
Half → 25K162193-31#19262#19293
25K → 30K215229-14#19293#19307
30K → 20M76171-95#19307#19402
20M → 21M10992+17#19402#19385
21M → 35K32110-78#19385#19463
35K → 23M79121-42#19463#19505
23M → 24M8747+40#19505#19465
24M → 40K11019+91#19465#19374
40K → 25.2M731+72#19374#19302
25.2M → Finish9628+68#19302#19234
TOTALS24561633+823
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing